ASTROSAT CZTI

Data Quality Report

Orbit 59242

Creation date: 2026-09-09T07:12:27.068550
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_271T01_9000006604_59242cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59242cztM0_level2_quad_clean.evt
Size (bytes)449,988,480108,357,120
Size429.1 MB 103.3 MB
Events in quadrant A3,701,636703,070
Events in quadrant B3,368,663767,866
Events in quadrant C3,514,744690,877
Events in quadrant D5,509,604616,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164332
B0154102
C0159232
D0215422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72341742.405308%
B72351081.492744%
C7235710.981341%
D72354466.164478%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9074 7235 53 53 0.58% 0.73%
B 9075 7237 18 18 0.20% 0.25%
C 9075 7237 42 42 0.46% 0.58%
D 9075 7237 377 377 4.15% 5.21%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 233 533749 2704.49 797 777 197.1
A 0 24 39210 195.02 797 777 197.1
A 10 251 26621 131.14 797 777 197.1
B 10 247 72323 414.87 798 767 172.5
B 4 201 42904 244.3 798 767 172.5
B 12 111 21324 119.19 798 767 172.5
C 10 22 136576 620.76 794 788 218.7
C 12 252 125274 569.09 794 788 218.7
C 5 250 82568 373.86 794 788 218.7
D 11 129 1194999 5501.3 765 731 217.1
D 12 110 1014860 4671.5 765 731 217.1
D 12 2 186392 855.23 765 731 217.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct